Cognomen Ернов (Ернов 
, Ernov 
) , all around the world, is a very rare family name. The surname Ернов is characteristic of Kazakhstan, where it is a very rare surname, and Russia. Much less frequently, Ернов is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ернов | Kazakhstan, Russia, Ukraine |
| Ernov | Russia, Philippines |
| лука фёдорович ернов RU (b. 1896) |
|